INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING‚ VOL. 15‚ 1771-1812 (1980) A STUDY OF THREE-NODE TRIANGULAR PLATE BENDING ELEMENTS JEAN-LOUIS BAT02 Depamment de Ginie Micanique. Universiti de Technologicde Compiigne‚ Compi&ne‚ France KLAUS-JORGEN BATHE AND LEE-WING HO Department of Mechanical Engineering‚ Massachusetts Institute of Technology‚ Cambridge‚ Massachuscits‚ U.S.A. SUMMARY An assessment of flat triangular plate bendingelementswith displacementdegrees-of-freedomat
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MATERIALS : METALS AND NON-METALS Y Iron Coal ou are familiar with a number of materials like iron‚ aluminium‚ copper‚ etc. Some materials have been given in Table 4.1. Table 4.1 : Appearance and Hardness of materials Object /Material Appearance Hardness (Shiny/Dull) (Very hard/ Not very hard) similar change if we try to beat a wood log ? Let us find out. Activity 4.1 Take a small iron nail‚ a coal piece‚ a piece of thick aluminium wire and a pencil lead. Beat the iron nail with
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1.) Explain why the following substances are added to soil by gardeners and farmers. a.) Lime CaO It increases the pH of soil.Soil that is too acidic presents two different problems for crops. First‚ the amount of necessary minerals in the soil such as potassium and calcium decreases. Second‚ aluminum and manganese levels increase to potentially toxic levels below a pH of roughly 5.5.Calcium oxide‚ addresses the problem. It reacts in water to release calcium ions and hydroxide ions‚ which raise
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utNowadays pollution is becoming more and more serious problem‚ particularly air pollution. Since the beginning of the industrial revolution‚ the chemical elements of the atmosphere have changed. Along with the development of industrialization‚ air pollution has spread and now it is a global issue. There are many kinds of air pollution‚ one of them is smog. Smog can come from many areas‚ particularly factories and transportation systems‚ but there are some differences between developed and developing
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Investigatory Project CHAPTER 1 I. INTRODUCTION: Nowadays ‚people can’t oppose the boosting of the countless pests and insects that disturb our daily habits. Controlling of insects and pests is one of the main problems of most farmers and gardeners. So‚ instead of buying commercial and expensive inorganic insecticides‚ an alternative and economical insect repellant made up of the sap of euphorbia plant‚ garlic‚ and siling labuyo‚ all natural insecticides derived from different plants which
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Definition of Terms American cockroach- the American cockroach (Periplaneta Americana)‚ also known as the waterbug or misidentified as the palmetto bug is the largest species of common cockroach‚ and often considered as pest. Breed- to produce offspring by hatching or gestation. Chitin- is a long chain polymer of N-acetylglucosamine‚ a derivative of glucose‚ and is found in many places throughout the natural world. Laboratory- is a facility that provides controlled conditions in which
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Introduction This experiment was designed to discover the how paper and other materials burned. The research question is: “What added material makes paper burn fastest?” My hypothesis was that gasoline would burn up the fastest. The experiment includes soaking toilet paper squares in various materials and burning them to see which burns the best. Research Paper itself burns well‚ that is a common known fact. Gasoline‚ rubbing alcohol‚ and petroleum jelly also are widely known as highly flammable
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Name: Tonny‚ Chan Kar Yu‚ Student ID: 10297729 Date of Experiment: 19th March 2005‚ Group: B1 Title: Preparation of 1-bromobutane from 1-butanol by SN2 reaction Objective: 1. To study the preparation of 1-bromobutane from 1-butanol by an SN2 reaction 2. To study the method of purification of an organic compound by simple extraction 3. To study the test of identification of alkyl halide Chemicals and Apparatus: ~18.0 g 1-butanol‚ ~20.0 g sodium bromide‚ 15 ml of concentrated sulfuric acid‚ anhydrous
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Making and Testing for Hydrogen Gas Felicity Tyler Aim: To produce and test for hydrogen gas. Materials: * rubber stopper * dilute hydrochloric acid (HCI) * zinc pieces (Zn) * test-tube rack * matches * dilute sulphuric acid (H2SO4) * 2 cm strips of magnesium ribbon (Mg) * Iron pieces (Fe) * Test-tube Method 1. Test the different metals with the acids by separately combining
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Fusarium wilt caused by Fusarium oxysporum f.sp. ciceris is a soil and seed borne disease affecting chickpea whichis widely distributed where chickpea is grown. It causes yield losses in the range of 12 to 100 % depending on the level of resistance of the genotype and suitability of environmental conditions for disease development. Management of soil borne diseases mainly involves use of preventive measures because it is harder to control the disease once established. Thiram and carbendazim are used
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